Window-sash lifter



Sept. 22, 1925.

W. R. GREGG wINDow sAsH LIFTER Filed June 13. 1924 ATTORNEY.

Patented Sept. 22, 1925.

UNITED STATI-:s

PATENT OFFICE.

WALTER REICE GREGG, OF ST. LOUIS, MISSOURI.

WrNDoW-sAsH turna.

yApplicatoniled June 13, 1924. Serial No. 719,839.

yTo all whom t may concern:

Be it known that I, WALTER Raros Greco, a citizen of they UnitedkStates, residing at St. Louis, in the State of Missouri, have inventedcertain new and useful Improvements in VVindow-Sash Lifters, of whichthe forth, of a window sash'lifter adaptedto be set when the sash islowered so that upon raising of the sash, the device will tend to drawup upon the same to give a lift thereto.

The invention contemplates the provision of a horizontal shaft adaptedto be positioned within the topportion of a window casing, the said.shaft carrying thereon a.

horizontally 'positioned spiral spring and` further carrying a pairy ofpulleys about each of which a sash cord is wound, one cord beingconnected to an upper sash and the other cord being connected to alower` sash, and these pulleys are revolved when either of the sash israised or lowered, the lowering of either sash acting to twist thespring carried upon the mentioned yshaft to place the same undertension, there of course beinga connection between the pulleys and thespring, so that when it is desired toV raise the sashthe spring, due tothe tension under which it has been placed through twisting, will act torevolve the pulley connected to the sash which is being raised, to windup the sash cord and thus assist in the raising of the sash.

A further and final object of the invention is the provision, in amanner as hereinafter set forth, of a windowy sash lift of simple desistrong and durable, and eicient for tlpurpose for whichv constructed,not complicated in structure, and inexpensive to manufacture andinstall.

The linve-ntion will bek best understood from a `consideration of thefollowing detailed ydescription taken in connection with thelaccompanying drawings forming part of this speciiication, with theunderstanding that the invention is not confined to any strictconformity with theV showing of the drawings but may be changed andmodified so long as such changes and modificationsv mark no materialdeparture from the salient features of the invention as expressed in theappended claim.

In the drawings Figure l disclosesV the upper portion of a` window framein elevation, a portion there-A of being broken away to show theapplication of the device embodying this invention. Figure 2 is ayvertical transverse sectional view upon the line 2-2 of Figure l.

Figure 3 is a detail in elevation, of the device embodying thisinvention, a portion thereof Abeing shown in section for betterillustration.

Figure llis a section upon the line 4 4,

of Figure 3. v

Figure 5 is a section upon the line 5-5 of Figure 3. A

Figure 6 is a detail,'showing in side elevation, one of the ksupportingbrackets used to retain the device in position.

Referring now to the drawings in detail, wherein like numerals ofreference indicate corresponding'parts throughout the several views, awindow sash is indicated at 8 having the usual surrounding front platesl and reary plates 2 `connected by andclosed between the inner edges bythe inner face or wall plate 3, which extends about the inner side ofthe frame formed by the` face plates l and 2. The inner wall 3 of theframe has extending thereabout the spaced front, intermediate, andV rearbeadings 4, 5 and 6 respectively, as shown in Figure 2, and these frontand intermediate beadings 4 and 5 separate and act toy guide the lowersash 7 in the frame, and the intermediate and rear beadings 5 and 6serve to retain and guide the upper sash 8 in the frame. Each sash hasformed in each side at the upper portion thereof, the usual sash cordslots 9 and l0, each being enlarged at its lower end for the purposewhich will become apparent hereafter, and the slot 10 of the upper sash8 is of greater depth than the slot 9 in the lower sash? and the purposefor this will become apparent as the description proceeds.

The device embodying this invention comprises a pair of spacedY innerand outer brackets 11 and 12, respectively, each bracket being formed intwo portions, each portion comprising a leg 13 having the lower endthereof turned outwardly in a horizontal plane as at 1a and the upperportion of the leg 13 has formed upon its inner face an abutment 15which forms the lower part of and from which extends a semi-circularmember 16 which terminates in a vertical ear 1T. rrThese vertical earsare secured together, when the two leg members are in position together,by means of screws 18 and the abutments 15 are likewise secured togetherby a like screw member. The angular extensions or feet 14 of each halfof a bracketare connected to a vcorresponding half of the other bracketby means of the connecting bar i9 which serves to ret-ain the halves ofthe bracket members in proper spaced relation. Each foot of each half ofeach bracket member has formed therethrough an aperture 20 for thepassage of a retainingl means (not shown). Upon reference to Figure 3 itwill be seen that one of the bracket members is larger than the otherand that the ring` or bearing formed by the two halves of one bracket isof greater size than that formed by the two halves of the otherbra-'.fket. The completed bracket shown in Figure G has not beenreferred to as either bracket 11 or 12, as this showing in this figureis only to designate the parts of the two brackets, as they areidentical with the exception of the size.

(llamped between the halves 1G of the bracket 12 is a. stub shaft 21 theinner end of which carries an annular collar 22 which bears against theinner side of the bracket 12 to prevent longitudinal movement of thestud shaft 21 between thel members 1G. The outer portion of this stubshaft 21 is also formed to provide .an annular lcollar 23 which bearsagainst the outer face of the bracket V12.

Formed integral with the outer end of the stub shaft 21 is a pulley 24,the inner side of which carries a relatively wide annular fiange 25 theouter face of which merges with the collar 23 carried upon the outer endof the shaft 21. This stub shaft 21 and pulley 24 have formed throughthe longitudinal center thereof a bore 26 through which there extends torevolve freely therein a shaft 2T. This shaft extends, :as beforestated, through the bore 26 of the members carried in the bracket 12 tothe bracket 11 where the end of the shaft is received between themembers 16 of this bracket `'to revolve therebetween. This shaft 2Thasformed thereabout and integral therewith, al collar 2S which isadapted to bear against the inner face or side of the bracket 11. Thiscollar 28 has extending inwardly therefrom an apertured lugl 29, the'use of which will become apparent as the description proceeds. A similarapertured lug 30 is formed upon the inner face of the collar 22.

The shaft 27 is of such length that when in the position above describedwith one end supported to revolve between the members 1G of the bracket11, the other end will extend well beyond the outer end of the pulley2-1, and this other end has one side flattened slightly and for a shortdistance inwardly from the end as indicated at 31.

A second pulley 32 is secured to this flattened end of the shaft 27,this pulley being provided with end flanges 33 of the same diameter asthe fla nge 25 upon the pulley 2st, the inner of the flanges 33 of thepulley 32 serving as a flange also for the outer end of the pulleyTapped through the drinn of the pulley 32 is a screw `member 3e, thehead of which is lflush with the periphery of the drum and the inner endof which contacts with the flattened surface 31 of the shaft 2? vtosecure the pulley upon the shaft.

The flange and the inner one of the flanges each has formedtherethrough, adjacent the drum body of the pulley upon which they arecarried, an aperture Carried about the body of thc shaft 2T between thebrackets 11 and 12, is a coiled spring 86 one end of which is attachedto the apertured ear or lug 30 carried upon the collar 22 and the otherend of which is secured in the apertured lug 29 carried by the collar 2Sas clearly shown in Figure 3 of the drawings.

The pulleys 2-1 and are each adapted to have wound thereupon sash cords37 and 3S respectively, the ends of which are secured inthe aperturesand 35.

When in operation, there are two of the devices just described locatedin the top of the window casing as indicated in Figure 1, these devicesbeing iu reverse position one with respect to the othe and as shown,positioned so that the inner pulley 24 of each device will be positioneddirectly above the side member of the sash frame'. The cord 37 leadiirgfrom the inner pulley 24 is passed downwardly through aperturesin the.top of the window casing and into the groove 10 of the upper windowsash as shown in Figure 1, while the cord 38 from the outer pulley 32 ispassed .downward through the top of the window casing and secured in thegroove S) ot' the lower sash 7. It will now be seen that by making theslot 10 of greater depth than the slot 9, the cords would pass directlydown from their respective pulleys without curving over any portion ofthe window frame. n

Then the device is installed, it vis installed with both sash raised,,that is, the upper sash in its normal closed position and the lowersash .7 in its raised or opened position, and both cords 37 and 38 arewound up upon their respective pulleys. When the supporting brackets 1land 12 have been secured in position within the window frame, and theco-rds 37 and 38 have had their ends secured as at 39 within theirrespective slots, the sash 8 is lowered, thus drawing upon the cord 38to unwind the same from the pulley 32 by causing this -pulley to revolveand revolve the shaft 27, which in turn revolves the collar 28 to twistthat end of the spring 36 to which the collar 38 is attached, placingthe same under tension. not twistedto such a degree that the tensionunder which it is placed will be sufficient to revolve the shaft andpulley 32 to raise the window, but` the tension is such that when onedesires to raise the lower sash 7, the spring will come into play torevolve the shaft 27 and the pulley 32 to wind thereon the cord 38 andthus assist in lifting the sash. If the upper sash is lowered from itsnormal closed position, it will thus draw upon the cord 37 and` revolvethe drum 24 and the stub shaft 21 to twist the. other end of the spring36 which is connected to the apertured ear 30 carried upon the collar 22and when it is desired to restore this sash to its normal position, thespring will thus act to revolve the drum 24 and assist in returning thesash to its closed position.

The spring 36 isy From the foregoing description, it may be seen that anew kand very novel structure results which is very efficient for thepurpose for which constructed.

Having thus ydescribed my invention what I claim is: 1

A sash lifter of the character described, comprising a tubular stubshaft, a pair of annular flanges thereabout, one at one end and theother about the central portion thereof, a pair of supporting bearings,one engaging said shaft between said flanges, a main shaft extendingfreely through said stub shaft and having one end supported in the otherbearing, a flanged pulley upon and keyed to the other end of said mainshaft and abutting said stub shaft, the inner flange of said pulleyconstituting an outer flange for the end of the stub shaft to set up inconnection therewith an inner pulley, a spring element wound about saidmain shaft and having one end attached to that flange upon the end ofthe stub shaft and its other end connected to said main shaft, andhanger cords wound about said pulleys and adapted to be connected to theupper and lower sash of a window for the purpose set forth.

In testimony whereof, I affix my signature hereto.

VALTER BEIGE GREGG.

